any flash drive inserted to my pc is detected but it doesnt appear in explorer. I've try deleting UpperFilters but still doesn't work. I also try to repair the windoes installation but nothing happen. I ran into this forum and some post are somehow similar to mine so I try the 8 procedures for melware removal. and the logs are included here. pls. give me feed back if my computer problem is cause by some virus or other. before i decided to reformat my computer. thank you in advance. More power!